wip commit
rename layoutWidget -> centralWidget
add primary pane and a central pane

this allows the dock bar animations to progress without need to allocate
extra widgets for the purpose of clipping.
update to be dock bar friendly
refactor and document
add qt api modules
make env check null safe
import from the qt api modules
fix typo
make event type PySide safe
make signal connections PySide safe
make checked handlers PySide safe
add date and time compatibility with pyside
wip commit
rename layoutWidget -> centralWidget
add primary pane and a central pane

this allows the dock bar animations to progress without need to allocate
extra widgets for the purpose of clipping.
update to be dock bar friendly
refactor and document
update docs to reflect argument flexibility.
don't constrain the maximum size of the dock area